General Motors (GM) Faces Coolant Leak Lawsuit Over Chevrolet, GMC And Buick Vehicles

July 20, 2026 · High impact · Updated Jul 21, 2026

General Motors (GM) is facing a class-action lawsuit alleging a coolant leak defect in certain Chevrolet, GMC, and Buick vehicles. The lawsuit claims GM was aware of the engine issue but failed to warn customers or provide adequate fixes, violating warranty and consumer protection laws.

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